4. Sprinkle 1 Tbsp. mozzarella, then a quarter of bacon, another 1 Tbsp. mozzarella and 1½ tsp. Parmesan over crust. Gently crack an egg over center of pizza.

5. Carefully slide pizza onto stone, using a spatula to ease pizza onto stone without spilling egg. Bake until crust is slightly charred on top and golden on bottom (lift an edge to check), cheese has melted and egg white is cooked but yolk is still jiggly, about 6 1/2 minutes. While pizza is cooking, make 3 more using remaining ingredients. Bake remaining pizzas. Using peel, transfer pizzas to individual plates. Sprinkle with scallions and pepper, then serve immediately.